The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 13, 2024
Filed:
Mar. 09, 2021
Applicant:
Samsung Sdi Co., Ltd., Yongin-si, KR;
Inventors:
Daehyun Hong, Yongin-si, KR;
Dowon Kim, Yongin-si, KR;
Assignee:
Samsung SDI Co., Ltd., Yongin-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 50/457 (2021.01); C09D 7/45 (2018.01); C09D 7/61 (2018.01); C09D 7/63 (2018.01); C09D 7/65 (2018.01); C09D 127/16 (2006.01); C09D 127/20 (2006.01); H01M 10/0525 (2010.01);
U.S. Cl.
CPC ...
H01M 50/457 (2021.01); C09D 7/45 (2018.01); C09D 7/61 (2018.01); C09D 7/63 (2018.01); C09D 7/65 (2018.01); C09D 127/16 (2013.01); C09D 127/20 (2013.01); H01M 10/0525 (2013.01);
Abstract
A coating composition is used to prepare a separator for a rechargeable lithium battery. The coating composition includes inorganic particles, a binder, a silane-based dispersant, and a polymeric additive, the silane-based dispersant includes a silane-based compound having fewer than 8 carbons in an alkyl main chain, and the polymeric additive includes a fatty acid compound and a polymer polyol. The coating composition may have secured or improved long-term storage stability, and may thus provide for a composite separator having a reduced number of black spot defects after coating the separator.